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Position: Home > Articles > Research on effect of Bacillus subtilis in Hami Melon juice by high pressure carbon dioxide Journal of Shihezi University(Natural Science) 2016,34 (6) 691-696

高压二氧化碳对哈密瓜汁中枯草芽孢杆菌杀灭效果研究

作  者:
李文新;侯思涵;裴龙英;陈计峦
单  位:
石河子大学食品学院
关键词:
哈密瓜汁;高压CO2;枯草芽孢杆菌;杀菌模型;超微结构
摘  要:
为探讨以新鲜哈密瓜汁为原料,研究高压二氧化碳(压力10、20、35 Mpa,温度、45、55℃)对哈密瓜汁中枯草芽孢杆菌的杀菌效果;采用透射电子显微镜观察枯草芽孢杆菌超微结构的变化。结果显示,在一定压力和温度下,枯草芽孢杆菌的死亡率随处理时间的延长而增大,温度越高死亡率也越大;应用R.xiong.建立了不同压力和温度下枯草芽孢杆菌死亡率的拟合模型,得到Af为1.0785,Bf为0.9541,SS为0.1126,RMSE为0.2278,R2为0.9756。由此可知,HPCD对哈密瓜汁中的枯草芽孢杆菌有良好的杀菌效果。
译  名:
Research on effect of Bacillus subtilis in Hami Melon juice by high pressure carbon dioxide
作  者:
LI Wenxin;HOU Sihan;PEI Longying;CHEN Jiluan;Food College,Shihezi University;
关键词:
Hami melon juice;;High pressure carbon dioxide;;Bacillus subtilis;;sterilization model;;Ultrastual
摘  要:
The effect of high pressure carbon dioxide(pressure:10、20、35 MPa, temperature:35、45、55 ℃) on Bacillus subtilis in Hami melon juice was studied. Ultrastructure changes of Bacillus subtilis were observed by using transmission electron microscope after treatment. It was shown that under a certain pressure and temperature, with the increase of the treatment time,the number of deaths of Bacillus subtilis increased, the higher the temperature, the greater the number of deaths. The Af, Bf,SS, RMSE and R2 of the model were estimated at different pressures and temperatures and they were 1.0785, 0.9541, 0.1126,and 0.2278, 0.9756, respectively. The model was fitted with R.xiong, and the model was verified, finally, the effective parameters of the model were obtained. The results show that high pressure carbon dioxide sterilization has good sterilization effect on Bacillus subtilis in melon juice.

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